JP2009091121A - Supply method of tire cord - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continuously extract a tire cord from a scroll without damaging the tire cord by a simple method, and to continuously supply tire cords to a tire cord processing device from a plurality of scrolls without stopping the operation of a device. <P>SOLUTION: The tire cord 11 is axially extracted along the outer periphery of a flange 21 from an unrotatably-held bobbin 13 with the flange 21; a rotatable rotor 24 rotating by using the center of the bobbin 13 as an axis is arranged on the flange 21; the rotor 24 rotates by spanning and following the extracted tire cord 11; the rotation is stopped simultaneously with the stop of the extraction of the tire cord 11; and the tire cord 11 is immobilized by applying tension to the tire cord 11 between a contact part of the outer periphery of the flange 21 and a cord surface layer of the bobbin 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a tire cord supply method, and more particularly, to a tire cord supply method capable of pulling out tire cords without damaging them from a scroll and supplying tire cords continuously from a plurality of scrolls.

  For example, organic fiber cords such as nylon and polyester used as a reinforcing material for pneumatic tires maintain and improve tire performance such as durability and wear resistance, and adhesion between cord material and rubber, Cord characteristics are important, and so-called dipping treatment is performed in which a tire cord is immersed in an adhesion treatment liquid (dip liquid) and then subjected to heat treatment in order to impart these characteristics.

  When a single cord is continuously dipped, a dip tank 104 that stores a dip solution of a tire cord 101 drawn from a feed roll 103 that is horizontally mounted on a let-off device 109 by a dipping machine 100 as shown in FIG. The dip solution is attached to the tire cord 101 by passing the dip solution through the dipping roll 105 and dipping. The tire cord 101 impregnated with the dipping solution by dipping is pulled up by a squeeze roll 106, dried in a state of tension in the length direction, transported to a heat treatment step 107, baked, and processed cord adjusted to the target cord characteristics. 102, and wound by the winder 110 around the winding roll 108 in a roll shape.

  Conventionally, when the tire cord 101 of the reeling-out scroll 103 disappears, the scroll 103 is replaced and a new tire cord 101 is joined and the dipping process is continued. However, in order to joint the cord 101, the temporary device 100 needs to be stopped. there were. Conventionally, a festoon has been used to avoid the temporary stop of the apparatus, but there is a problem in increasing the size of the apparatus.

A method of taking out a cord in a longitudinal configuration in which a cord wound around a scroll is guided through a ring and a traveler through a yarn guide is described in Patent Document 1, but when the remaining cord of the scroll is reduced (several hundred meters) There is a problem that the cord from the scroll cannot follow the traveler and the cord is broken.
JP 2004-316049 A

  In view of the above problems, the present invention continuously pulls a tire cord from a scroll without damaging the tire cord by a simple method, and processes the tire cord from a plurality of scrolls without stopping the operation of the apparatus. A tire cord supply method that enables continuous operation of the apparatus by continuously supplying the apparatus.

  The invention according to claim 1 is a tire cord supplying method for pulling out and supplying a tire cord wound around a scroll, wherein the tire cord extends along the outer periphery of the end of the scroll from the scroll held non-rotating. The tire cord is pulled out in the axial direction, and when the tire cord stops being pulled out, the tire cord is tensioned between the contact portion on the outer periphery of the scroll end portion and the cord surface layer portion of the scroll to be stationary. This is a method for supplying a tire cord.

  According to a second aspect of the present invention, a rotatable rotor that rotates about the center of the scroll is arranged at the end of the scroll, and the rotor is rotated by being driven by the tire cord that is pulled out. The rotation of the tire cord is stopped at the same time as the withdrawal of the tire cord, and the rotor tensions the tire cord between the contact portion of the outer periphery of the scroll end and the cord surface layer portion of the scroll. The tire cord supplying method according to claim 1, wherein the tire cord is applied and stopped.

  When the tire cord wound around a plurality of scrolls is continuously supplied, the winding start portion of the tire cord wound around the scroll being pulled out and the scroll that is pulled out next are provided. The end portion of the tire cord wound around the joint is jointed, and the scroll being pulled out and the scroll to be pulled out next are juxtaposed, and when the tire cord wound around the scroll being pulled out disappears, the joint is 3. The tire cord supply method according to claim 1, wherein the tire cord is continuously drawn out from the scroll that is drawn out next through the tire cord.

  The invention according to claim 4 is characterized in that the tire cord being pulled out is drawn out in a direction perpendicular to the center of the scroll from the scroll around which the tire cord is wound. This is a tire cord supply method.

  According to a fifth aspect of the present invention, when the tire cord wound around a plurality of scrolls is continuously supplied, the tire cord drawn from the scroll is always pulled out in the vertical direction of the center of the scroll. 4. The tire cord according to claim 3, wherein when the tire cord wound on the scroll being pulled out disappears, the position of the scroll to be pulled out next is changed to the position of the scroll being pulled out. 5. This is the supply method.

  According to a sixth aspect of the present invention, the position of the scroll from which the tire cord is being pulled out and the next reel to be pulled out are automatically changed by detecting the change in the scroll from which the tire cord is pulled out. 6. The tire cord supplying method according to claim 5, wherein the tire cord is supplied.

  The invention according to claim 7 is the tire cord supply method according to claim 2, wherein the rotor is formed of a metal wire.

  The invention according to claim 8 is the tire cord supply method according to any one of claims 1 to 7, characterized in that a disc-like plate body is disposed at the end of the scroll.

  A ninth aspect of the present invention is the tire cord supply method according to the eighth aspect, wherein a notch is provided in a part of a peripheral edge portion of the disc-shaped plate body.

  According to the present invention, since the tire cord can be jointed between the scrolls while supplying the cord by a simple method without using expensive parts, the time and time for the joint are not limited, and the joint cord This eliminates the need to temporarily stop the tire cord processing apparatus. This enables, for example, continuous operation of processing devices such as a tire cord single cord dip processing device, rubber glue dip processing, and topping processing, which contributes to an improvement in device operating rate and a reduction in operating costs. .

  Next, modes for carrying out the present invention will be described with reference to the accompanying drawings. In the present embodiment, description will be made according to an example of dipping processing of a single cord for tire, but the present invention is not limited to this example.

  As shown in FIG. 1, the tire cord dipping process includes a dipping tank 14 in which a dipping machine 10 stores a dipping solution for a tire cord 11 drawn from a flanged bobbin 13 mounted on a let-off device 19 by a dipping machine 10. The dip solution is attached to the tire cord 11 by passing the dip solution through the dipping roll 15 and dipping. The tire cord 11 impregnated with the dipping solution by dipping is pulled up by a squeeze roll 16, dried in a state where tension is applied in the length direction, transported to a heat treatment step 17, baked, and adjusted for adhesion and cord characteristics. It becomes the code | cord | chord 12, and is wound up by the winding bobbin 18 by the winder 20 in roll shape.

  As shown in FIG. 2, the bobbin 13 from which the tire cord 11 is pulled out has flanges 21 on both sides of the bobbin 13, and is held by the letoff device 19 in a non-rotating state.

  In addition, the bobbin 13 can also use the type which does not have the flange 21 in both sides, for example, the pann, corn, cheese etc. which make a cylindrical shape. In this case, a disk-shaped plate body that substitutes for the flange may be arranged on the side surface of the bobbin on the cord drawing side and fixed to the bobbin.

  The bobbin 13 has a bobbin center hole 22 inserted into a support shaft 23 erected on the let-off device 19 and is placed vertically on the let-off device 19 and is in a non-rotating state. The bobbin 13 may be fixed to the let-off device 19 with a holder or the like, or may be held in a non-rotating state by its own weight or the frictional force between the let-off device 19 and the flange 21.

  The support shaft 23 is provided with a rotatable rotor 24 that rotates while sliding on the flange 21 with the shaft 23 as a center, that is, with the center of the flange 21 as an axis.

  The tire cord 11 is drawn out from the bobbin 13 in the bobbin axial direction, so that the tire cord 11 circulates along the outer periphery of the flange 21, and the drawn tire cord 11 is placed on the rotor 24 to cause the rotor 24 to follow the tire cord 11. Rotate while.

  At the same time as the withdrawal of the tire cord 11 stops, the rotor 24 stops rotating, whereby the tire cord 11 is tensioned between the outer periphery of the end of the flange 21 and the tire cord surface layer of the bobbin 13 by the rotor 24. So that it can be stopped and held in a closed state. That is, the tire cord 11 is tensioned by the repulsive force generated by the rotation stop of the rotor 24 so that the tire cord 11 is not slackened and slips down below the bobbin 13 when the withdrawal of the tire cord 11 is stopped. It is.

  In order to give tension to the tire cord 11, the setting of the rotor 24 is important. That is, the pulling condition of the tire cord 11 and the frictional resistance between the rotor 24 and the flange 21 surface are factors.

  The material and shape of the rotor 24 are not particularly limited. Examples of the material include metals such as iron, copper, aluminum, and brass, synthetic resins such as nylon and polyester, and ceramics. As shown in FIG. 3, the shape is as follows: (a) a plate-shaped body with a rotation hole 25, (b) a rod-shaped body with a rotation hole 25, and (c) a weight at the tip. Is mentioned.

  Among these, from the viewpoint that the frictional resistance between the rotor 24 and the surface of the flange 21 can be arbitrarily and easily adjusted, a metal wire that can easily adjust the conditions related to the frictional force such as the shape and weight of the rotor 24 is preferable. Specifically, an iron wire, a copper wire, and an aluminum wire having a diameter of 1 to 4 mm are included.

  These rotors 24 can be selected from a plurality of rotors by adjusting the frictional resistance by inserting a rotation hole 25 into the support shaft 23 on the flange 21.

  Further, in order to make the frictional resistance on the flange side uniform with respect to the rotor 24, a disk-like plate body 26 can be disposed between the flange 21 and the rotor 24 as shown in FIG. 4.

  The disk-like plate body 26 is not particularly limited as long as its surface has a uniform frictional resistance, and is a metal plate such as iron, copper, aluminum, aluminum alloy, brass, or synthetic resin such as nylon or polyester. Although a board, a ceramic board, etc. are mentioned, the metal plate and synthetic resin film of thickness 0.05-3mm can be used conveniently from the point of the uniformity of frictional resistance, the ease of a process, and a price.

  Further, the frictional resistance can be set in consideration of the cord structure such as the thickness of the tire cord 11, the drawing speed, the flange outer diameter, and the like.

  Further, as shown in FIG. 3 (d), the disk-shaped plate body 26 is provided with a cut 26a in a part of the peripheral edge of the disk-shaped plate body 26, and a cord 11 is inserted into the cut 26a to form a rotor. it can.

  In the present invention, when a tire cord wound around a plurality of bobbins is supplied to a tire cord processing apparatus or the like by the above-described tire cord supply method, the cord is not temporarily stopped to joint the cords between the bobbins. Can be continuously supplied to the processing apparatus.

  5 to 7 show a let-off device 19 in the case where the tire cord 11 is continuously supplied from two bobbins 13A and 13B to a tire cord processing apparatus, for example, the dip processing apparatus 10 described above.

  As shown in FIG. 5, the tire cord 11 is pulled out from the bobbin 13A and supplied to the dip processing apparatus 10, and the bobbin 13B from which the tire cord 11 is next pulled out is arranged in parallel. The bobbins 13A and 13B are placed vertically and the center hole 22 is inserted into the support shaft 23 of the let-off device 19, and the bobbins 13A and 13B are in a non-rotating state.

  A joint 36 is formed between a winding start portion 11a of the tire cord 11 wound around the bobbin 13A being pulled out and a winding end portion 11b of the tire cord 11 wound around the bobbin 13B to be pulled out next.

  As described above, the bobbins 13A and 13B are provided with a rotatable rotor 24 that rotates while sliding on the outer periphery of the flange 21 with the center of the flange 21 as an axis. The tire cord 11 extends from the bobbin 13 to the bobbin center. Thus, the tire cord 11 that has been pulled out wraps around the rotor 24 and is rotated while the rotor 24 is driven by the tire cord 11.

  As a result, when trouble or the like occurs in the dip processing apparatus 10 and the apparatus stops, even if the withdrawal of the tire cord 11 is stopped, the rotor 24 stops rotating at the same time, and the tire cord 11 is Since it is stopped and held in a state where tension is applied between the outer periphery of the end portion of the flange 21 and the tire cord surface layer of the bobbin 13, the tire cord 11 is not slackened and does not slide down below the bobbin, and at the time of trouble recovery Operation can be resumed smoothly.

  When the tire cord 11 of the bobbin 13A is lost, the tire cord 11 of the bobbin 13B connected via the joint 36 is automatically pulled out as shown in FIG. 7, and the tire cord 11 is the same as in the case of the bobbin 13A. Can be continuously supplied to the dip processing apparatus 10.

  In the case where tire cords wound around a plurality of bobbins are continuously supplied, it is preferable that the tire cord drawn out from the bobbin is always drawn out in a direction perpendicular to the bobbin center.

  Therefore, as shown in FIG. 8 (FIG. 8 shows a case where there are two bobbins), when the tire cord 11 wound around the bobbin 13A being pulled out disappears, the bobbin 13B connected via the joint 36 is removed. When the tire cord 11 is automatically pulled out, the position of the bobbin 13B from which the cord 11 is pulled out next is changed to the position of the bobbin 13A, so that the tire cord 11 pulled out from the bobbins 13A and 13B is always placed at the center of the bobbin. Can be pulled out vertically.

  The position of the bobbins 13A and 13B is changed by providing a sensor 37 for detecting the cord 11 when the tire cord 11 provided between the bobbins 13A and 13B is pulled out and replacing the stand 29 on which the bobbins 13A and 13B are automatically mounted. The positions of the bobbins 13A and 13B can be exchanged by a method such as sliding left and right or rotating the stand 29.

  Further, while the tire cord 11 is being supplied from the bobbin 13B to the apparatus 10, the empty bobbin on the bobbin 13A side is removed and a new fully wound bobbin 13A of the tire cord 11 is mounted, and the end of the winding and the tire of the bobbin 13B being pulled out If the winding start portion of the cord 11 is connected to the joint 36, the tire cord 11 can be alternately supplied between the bobbins 13A and B, and the tire cord 11 can be supplied to the dip processing apparatus 10 indefinitely.

  The arrangement of the bobbin 13 on the let-off device 19 can be used in the above-described vertical position. However, as long as the bobbin can be kept non-rotating and the cord can be pulled out in the bobbin axial direction, the horizontal direction shown in FIG. It may be placed, or it may be inclined to the center as shown in (b). Also, three or more bobbins can be used.

  The tire cord supply method according to the present invention can be used for supplying cords to various tire cord processing devices such as a tire cord single cord dip processing device, rubber glue dip processing, and topping processing. This enables continuous operation without interruption.

It is the schematic which shows the dipping process of embodiment. It is a perspective view of the bobbin which shows the cord supply method of embodiment. It is a top view which illustrates a rotor. It is a partial enlarged view of a bobbin showing a code supply method of an embodiment. It is a bobbin front view at the time of supplying a cord from two bobbins of an embodiment. It is a bobbin top view in case a cord is supplied from two bobbins of an embodiment. It is explanatory drawing which alternately supplies the code | symbol of the two bobbins of embodiment. It is explanatory drawing which supplies automatically the code | symbol of the two bobbins of embodiment alternately. It is explanatory drawing which shows the example of arrangement | positioning of two bobbins. It is the schematic which shows the conventional dipping process.

Explanation of symbols

11 …… Tire cord 13 …… Bobbin 21 …… Flange 24 …… Rotor

Claims (9)

A tire cord supplying method for pulling out and supplying a tire cord wound around a scroll,
The tire cord is pulled out in the axial direction along the outer periphery of the end of the scroll from the scroll held non-rotating,
A tire cord characterized by applying tension to the tire cord between the abutting portion on the outer periphery of the end of the scroll and a cord surface layer portion of the scroll when drawing out of the tire cord is stopped. Supply method. A rotatable rotor that rotates about the center of the scroll is arranged at the end of the scroll,
The rotor rotates following the tire cord pulled out, and stops the rotation at the same time as the withdrawal of the tire cord,
2. The tire according to claim 1, wherein the rotor applies a tension to the tire cord between the contact portion on the outer periphery of the end of the scroll and a cord surface layer portion of the scroll to make the tire cord stand still. How to supply the code. When continuously supplying tire cords wound around multiple scrolls,
Jointing the winding start portion of the tire cord wound around the scroll being pulled out and the winding end portion of the tire cord wound around the scroll being pulled out next,
The scroll being pulled out and the scroll to be pulled out next are arranged in parallel, and when the tire cord wound around the scroll being pulled out disappears, the tire cord is continuously pulled out from the scroll that is pulled out next through the joint. The tire cord supply method according to claim 1, wherein the tire cord is supplied. The tire cord supply method according to any one of claims 1 to 3, wherein the tire cord being pulled out is drawn in a direction perpendicular to the center of the scroll from a roll around which the tire cord is wound. When continuously supplying tire cords wound around multiple scrolls,
When the tire cord wound on the scroll being pulled out disappears so that the tire cord pulled out from the scroll is always pulled out in the vertical direction of the center of the scroll, the tire cord is moved to the position of the scroll being pulled out. The method of supplying a tire cord according to claim 3, wherein the position of the reel to be pulled out is changed. The position change between the scroll from which the tire cord is pulled out and the scroll to be pulled out next is automatically performed by detecting a change in the scroll from which the tire cord is pulled out. Tire cord supply method. The tire cord supply method according to claim 2, wherein the rotor is formed of a metal wire. The method for supplying a tire cord according to any one of claims 1 to 7, wherein a disk-shaped plate is disposed at the end of the scroll. The tire cord supply method according to claim 8, wherein a notch is provided in a part of a peripheral edge portion of the disk-shaped plate body.

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